J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (12): 2458-2463.DOI: 10.1016/j.jmst.2018.05.010
• Orginal Article • Previous Articles Next Articles
Jie Huab, Xi’An Fanab*(), Chengpeng Jiangab, Bo Fengab, Qiusheng Xiangab, Guangqiang Liab, Zhu Heab, Yawei Liabc
Received:
2018-01-02
Revised:
2018-02-07
Accepted:
2018-03-17
Online:
2018-12-20
Published:
2018-11-15
Contact:
Fan Xi’An
Jie Hu, Xi’An Fan, Chengpeng Jiang, Bo Feng, Qiusheng Xiang, Guangqiang Li, Zhu He, Yawei Li. Introduction of porous structure: A feasible and promising method for improving thermoelectric performance of Bi2Te3 based bulks[J]. J. Mater. Sci. Technol., 2018, 34(12): 2458-2463.
Sieve size (mesh) | Particle size range (μm) | d(0.1) (μm) | d(0.5) (μm) | d(0.9) (μm) | D[ |
---|---|---|---|---|---|
>400 | 0.26-71 | 2.253 | 13.104 | 36.482 | 16.605 |
Table 1 Particle size distribution of Bi0.4Sb1.6Te3 powders.
Sieve size (mesh) | Particle size range (μm) | d(0.1) (μm) | d(0.5) (μm) | d(0.9) (μm) | D[ |
---|---|---|---|---|---|
>400 | 0.26-71 | 2.253 | 13.104 | 36.482 | 16.605 |
Fig. 3. Electrical transport properties of Bi0.4Sb1.6Te3 bulks with different porosity at 300?K (a: RD-100%; b: RD-95%; c: RD-90%; d: RD-86.5%; e: RD-83%).
Fig. 4. Temperature dependence of electrical transport properties of Bi0.4Sb1.6Te3 bulks with different porosity: (a) electrical resistivity; (b) Seebeck coefficient; (c) power factor.
Fig. 5. Temperature dependence of thermal transport properties of Bi0.4Sb1.6Te3 bulks with different porosity: (a) thermal conductivity; (b) electrical conductivity; (c) lattice thermal conductivity.
Fig. 8. Vickers hardness of Bi0.4Sb1.6Te3 bulks with different porosity (a: RD-100%; b: RD-95%; c: RD-90%; d: RD-86.5%; e: RD-83%; f: zone melting sample).
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